diff options
Diffstat (limited to 'spec/ruby/language/undef_spec.rb')
-rw-r--r-- | spec/ruby/language/undef_spec.rb | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/spec/ruby/language/undef_spec.rb b/spec/ruby/language/undef_spec.rb new file mode 100644 index 0000000000..9e788f2a09 --- /dev/null +++ b/spec/ruby/language/undef_spec.rb @@ -0,0 +1,72 @@ +require File.expand_path('../../spec_helper', __FILE__) + +describe "The undef keyword" do + describe "undefines a method" do + before :each do + @undef_class = Class.new do + def meth(o); o; end + end + @obj = @undef_class.new + @obj.meth(5).should == 5 + end + + it "with an identifier" do + @undef_class.class_eval do + undef meth + end + lambda { @obj.meth(5) }.should raise_error(NoMethodError) + end + + it "with a simple symbol" do + @undef_class.class_eval do + undef :meth + end + lambda { @obj.meth(5) }.should raise_error(NoMethodError) + end + + it "with a single quoted symbol" do + @undef_class.class_eval do + undef :'meth' + end + lambda { @obj.meth(5) }.should raise_error(NoMethodError) + end + + it "with a double quoted symbol" do + @undef_class.class_eval do + undef :"meth" + end + lambda { @obj.meth(5) }.should raise_error(NoMethodError) + end + + it "with a interpolated symbol" do + @undef_class.class_eval do + undef :"#{'meth'}" + end + lambda { @obj.meth(5) }.should raise_error(NoMethodError) + end + end + + it "allows undefining multiple methods at a time" do + undef_multiple = Class.new do + def method1; end + def method2; :nope; end + + undef :method1, :method2 + end + + obj = undef_multiple.new + obj.respond_to?(:method1).should == false + obj.respond_to?(:method2).should == false + end + + it "raises a NameError when passed a missing name" do + Class.new do + lambda { + undef not_exist + }.should raise_error(NameError) { |e| + # a NameError and not a NoMethodError + e.class.should == NameError + } + end + end +end |